Thanks for your advice, that question got some answers at both ends of the spectrum 

. I ran tubed Michelin's ZXL LT and Kuhmo MT LT for about 50,000 kms and never had a single flat, even when running them at 14 psi in the sand. The main reason I'm interested in tubed tyres is being able to change a tyre and or tube self contained in a remote location, if the tyre gets a tear that can't be repaired by a tubeless plug kit. Good tubes are hard to get out of town, but If I carry a patch kit and 3 or four spare Michelin tubes, and a spare tyre,  it gives some options.  The decision about new tyres is not made yet, and I do have a set of Disco wheels that need some paint that could go on instead.
But my understanding is the tubed type rims without the safety bead the tyre is a lot easier to get off and on, also some outback tour guides recommend against radial  tyres for desert travel for that reason, and that the radials are easier to damage in the side wall than 750-16 LT. My guess is the aulro team has hundreds of simpson desert crossings under their collective belt. cheers simmo
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